基于双包被技术的对光稳定性姜黄素乳液制备  

Preparation of Photostable Curcumin Emulsion Based on Double Coating Technology

作　　者：黄德金 钟俊锋 谭少聪 邱梦辉 敬思群 李海霞 HUANG Dejin;ZHONG Junfeng;TAN Shaocong;QIU Menghui;JING Siqun;LI Haixia(Yingdong Food College,Shaoguan University,Shaoguan 512005;Zhuhai Yafuxingyuan Food Industry Co.,Ltd.,Zhuhai 519000)

机构地区：[1]韶关学院英东食品学院,韶关512005 [2]珠海雅富兴源食品工业有限公司,珠海519000

出　　处：《食品工业》2020年第9期45-50,共6页The Food Industry

基　　金：2019年韶关学院国家级大学生创新创业训练计划支持项目(项目批准号:201910576001X)。

摘　　要：利用动态高压微射流技术-双包被技术联用来提高姜黄素对光稳定性,同时制得双包被姜黄素乳液。以吸光度为考察指标,分析了抗氧化剂(植酸、PG、TBHQ)、稳定剂(墨鱼汁、EDTA、石斛汁、柠檬酸)对姜黄素光稳定性的影响;制备姜黄素乳液的水相时,以包埋率为指标,考察了乳清蛋白、OSA变性淀粉、(OSA变性淀粉+乳清蛋白)试验组对包埋效果的影响,确定了合适的单包被壁材;从包埋率、离心沉降率、光稳定性、显微拍照四个方面综合评价双包被对姜黄素光稳定性作用效果,同时确定了动态高压微射流技术均质的最适压力。结果表明,加入抗氧化剂0.1%植酸、稳定剂0.1%柠檬酸溶液可显著增强姜黄素对光的稳定性,且不受介质p H影响;以乳清蛋白为壁材的包埋率较高(71.70%);双包被姜黄素乳液的最佳制备工艺:以乳清蛋白为壁材、经60 MPa动态高压微射流均质制备单包被姜黄素,再以多孔淀粉和β-环糊精作为壁材(壁材比1∶1),芯壁比10∶1,在50℃温度下经高速分散机乳化(20000 r/min,4 min)。双包被效果优于单包被,双包被技术在提高姜黄素对光稳定性的同时,贮藏稳定性显著提高。The aim was to improve the photostability of curcumin by combining dynamic high pressure microfluidization(DHPM)and double coating technology while to prepare double coated curcumin lotion.The impact of antioxidants(phytic acid,PG and TBHQ)and stabilizer(cuttlefish juice,EDTA,dendrobium juice and citric acid)on stability of curcumin against light were observed with absorbance value as index.During making aqueous phase ofcurcumin emulsion,the effect of whey isolate protein,OSA modified starch and(whey isolate protein+OSA modified starch)group on embedding effect with embedding rate as index,the suitable single-coated wall material was determined.The effect of double coating technique on photostability of curcumin was comprehensively evaluated in terms of embedding rate,centrifugal sedimentation rate,photostability and photomicrography,while the optimum homogenization pressure of dynamic high pressure microjet technology was obtained.The results show that adding antioxidant 0.1%phytic acid and stabilizer 0.1%citric acid solution could significantly enhance the stability of curcumin to light without being affected by the p H of the medium.Furthermore,the embedding rate was higher(71.70%)with whey protein as wall material,and the effect of double coating was better than one layer coating.Taken together,the optimal preparation process of doublecoated curcumin emulsion were as follows:DHPM homogenization 60 MPa was applied to prepare single-coated curcumin emulsification with whey protein as wall material,then the double coating curcumin emulsion was developed through emulsification at temperature of 50℃by a high speed disperser(20000 r/min,4 min)with porous starch and beta-cyclodextrin as wall material(ratio of wall material 1∶1)while ratio of core to wall was 10∶1.The double coating technique could not only improve the photostability of curcumin but also the storage stability of curcumin.

关 键 词：双包被姜黄素 光稳定性 壁材选择 动态高压微射流 

分 类 号：TS201.2[轻工技术与工程—食品科学]